content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.flowable.internal.operators;
  
  import java.util.concurrent.atomic.*;
  
  import org.reactivestreams.*;
  
  import hu.akarnokd.reactivestreams.extensions.RelaxedSubscriber;
  import io.reactivex.common.internal.utils.AtomicThrowable;
  import io.reactivex.flowable.Flowable;
  import io.reactivex.flowable.internal.subscriptions.SubscriptionHelper;
  import io.reactivex.flowable.internal.utils.HalfSerializer;
  
  public final class FlowableTakeUntil<T, U> extends AbstractFlowableWithUpstream<T, T> {
      final Publisher<? extends U> other;
      public FlowableTakeUntil(Flowable<T> source, Publisher<? extends U> other) {
          super(source);
          this.other = other;
      }
  
      @Override
      protected void subscribeActual(Subscriber<? super T> child) {
          TakeUntilMainSubscriber<T> parent = new TakeUntilMainSubscriber<T>(child);
          child.onSubscribe(parent);
  
          other.subscribe(parent.other);
  
          source.subscribe(parent);
      }
  
      static final class TakeUntilMainSubscriber<T> extends AtomicInteger implements RelaxedSubscriber<T>, Subscription {
  
          private static final long serialVersionUID = -4945480365982832967L;
  
          final Subscriber<? super T> actual;
  
          final AtomicLong requested;
  
          final AtomicReference<Subscription> s;
  
          final AtomicThrowable error;
  
          final OtherSubscriber other;
  
          TakeUntilMainSubscriber(Subscriber<? super T> actual) {
              this.actual = actual;
              this.requested = new AtomicLong();
              this.s = new AtomicReference<Subscription>();
              this.other = new OtherSubscriber();
              this.error = new AtomicThrowable();
          }
  
          @Override
          public void onSubscribe(Subscription s) {
              SubscriptionHelper.deferredSetOnce(this.s, requested, s);
          }
  
          @Override
          public void onNext(T t) {
              HalfSerializer.onNext(actual, t, this, error);
          }
  
          @Override
          public void onError(Throwable t) {
              SubscriptionHelper.cancel(other);
              HalfSerializer.onError(actual, t, this, error);
          }
  
          @Override
          public void onComplete() {
              SubscriptionHelper.cancel(other);
              HalfSerializer.onComplete(actual, this, error);
          }
  
          @Override
          public void request(long n) {
              SubscriptionHelper.deferredRequest(s, requested, n);
          }
  
          @Override
          public void cancel() {
              SubscriptionHelper.cancel(s);
              SubscriptionHelper.cancel(other);
          }
  
          final class OtherSubscriber extends AtomicReference<Subscription> implements RelaxedSubscriber<Object> {
  
              private static final long serialVersionUID = -3592821756711087922L;
  
              @Override
              public void onSubscribe(Subscription s) {
                  if (SubscriptionHelper.setOnce(this, s)) {
                      s.request(Long.MAX_VALUE);
                  }
              }
  
              @Override
              public void onNext(Object t) {
                  SubscriptionHelper.cancel(this);
                  onComplete();
              }
  
              @Override
              public void onError(Throwable t) {
                  SubscriptionHelper.cancel(s);
                  HalfSerializer.onError(actual, t, TakeUntilMainSubscriber.this, error);
              }
  
              @Override
              public void onComplete() {
                  SubscriptionHelper.cancel(s);
                  HalfSerializer.onComplete(actual, TakeUntilMainSubscriber.this, error);
              }
  
          }
      }
  }
  